Allergy test (patch test/epicutaneous test)

Preparations at home before the test
In the last 2-3 weeks before the epicutaneous test, you should avoid smearing the skin on your back with local steroids (cortisone ointments and creams against eczema). If you use Prednisolone tablets, the dermatologist will assess whether the test can still be carried out. You should avoid sun on your back in the last 4 weeks before the test. If you suspect that you are reacting to particular products (cosmetics, creams etc.), you can bring these to the consultation.

During the procedure
During the procedure, the test material will be taped to the back using a plaster. The procedure lasts approx. 20 minutes. A new consultation with a dermatologist is arranged to read the test after 3 days. Here you will receive information about whether an allergy has been detected, possibly which products you should avoid coming into contact with and what kind of treatment is recommended.

After the consultation
When the patch with the test material is on, you cannot wash the area where the tape is attached, avoid activity that induces sweat, and do not expose the test area to the sun. Sunburn can reduce the test's reactivity and, in the worst case, give false negative results. Avoid scratching the patch, and preferably wear a top at night to prevent it from coming off while you sleep.

Possible side effects
Epicutaneous tests rarely cause complications. In some cases, the reaction to the test material itself can cause a severe rash, but this can be smeared with strong local steroids to reduce itching.